1455142 - position: fixed layers disappear

Status: RESOLVED WORKSFORME

(Core :: Panning and Zooming, enhancement, P3)

Description

[Benoit Girard (:BenWa)]

I'm seeing position fixed layers disappear. This happens with the top bar on Facebook but I've seen it happen on LinkedIn and gmail. It's been like this for a couple of weeks now but it seems to be have gotten a lot worse lately.

Comment 1

[Kartikaya Gupta (email:[e-mail])]

Is this on regular (i.e. not webrender) nightly firefox?

Comment 2

[Benoit Girard (:BenWa)]

Yes this was whatever was default 20 days ago with no pref flips. :beltzner had also seen it on Facebook. I think I saw it again last week. I can ping back if I see it again this week. It's very transient so I don't have good STR to provide.

Comment 3

[Kartikaya Gupta (email:[e-mail])]

When it happens, does it come back eventually (e.g. on tab switch), or does it stay gone until the page is reloaded? It might be useful to get a display list and/or layers dump if you see it again.

Comment 4

[Benoit Girard (:BenWa)]

Attachment: about:support

Comment 5

[Kartikaya Gupta (email:[e-mail])]

Have you seen this again?

Comment 6

[Benoit Girard (:BenWa)]

Nope